Icebox

Taken all the way down to base materials, one Icebox is 2 crafting steps deep and needs 1 intermediate — Lignum Vitae Lumber ×2 — which resolves to 3 distinct raw materials totalling 11 units, plus 28 crystals.

That bill outweighs 5,999 of the 13,602 recipes tracked here and 581 of the 1,552 Carpenter ones, and 4,464 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 14 are burned by the intermediates, so the real crystal cost is 21 Wind Crystal and 7 Ice Crystal.

Every step is Carpenter work, from a Lv 78 intermediate up to the Lv 80 finish, so one class covers the whole chain.

2 of the 3 raw materials match a gathering node, none of them timed; the other 1 comes from vendors, drops or content this site does not track.

Of the intermediates, Lignum Vitae Lumber has the widest use: 134 recipes call for it, spanning seven of the eight crafting classes.